Institutt for materialteknologi: Nye registreringer
Viser treff 1-20 av 2509
-
An operando 3D optical microscopy study on the Li metal anode formation in anode-less solid-state batteries
(Master thesis, 2024)Faststoffbatterier med metalliske litiumanoder har et stort potensiale til å betydelig øke ders energitetthet og har nylig fått mye oppmerksomhet. Komplekse og kostbare produksjonsprosesser hindrer imidlertid, for øyeblikket, ... -
Comparative Study of Hydrogen Reduction of Bauxite Residue-Calcium Sintered and Self-Hardened Pellets Followed by Magnetic Separation for Iron Recovery
(Journal article; Peer reviewed, 2023)To minimize the carbon footprint in the industrial valourization of bauxite residue, hydrogen was used as a reducing agent. The current study experimentally investigated hydrogen reduction of bauxite residue-CaO sintered ... -
Bulk Resistivity of Materials in the Si/FeSi Furnace
(Journal article; Peer reviewed, 2023)The formation of silicon carbide (SiC) and the energy distribution in the furnace are two important parameters in evaluating furnace operations. The energy distribution is determined by the resistivity of the materials in ... -
A Full-Field Crystal Plasticity Study on the Bauschinger Effect Caused by Non-Shearable Particles and Voids in Aluminium Single Crystals
(Journal article; Peer reviewed, 2024)In the present work, the goal is to use two-scale simulations to be incorporated into the full-field open software DAMASK version 2.0.3 crystal plasticity framework, in relation to the Bauschinger effect caused by the ... -
Effect of microstructure on precipitation of β-Mg2Si during cooling of Al-Mg- Si alloys
(Doctoral theses at NTNU;2024:228, Doctoral thesis, 2024)Processing of Al-Mg-Si alloys requires tight control of the various secondary Mg-Si phases that form during the processing steps. In this regard, the cooling stage after homogenisation is a crucial step because of the ... -
The effect of grain size and rolling reduction on microstructure evolution and annealing hardening response of a Mg-3Gd alloy
(Journal article; Peer reviewed, 2024)Mg-3Gd (wt.%) samples with different initial grain sizes were prepared to evaluate the grain size effect on microstructural evolution during cold rolling and subsequent annealing hardening response. The deformation behavior ... -
Coupled Transport in Li-ion Battery Electrolytes
(Doctoral theses at NTNU;2024:187, Doctoral thesis, 2024)Electrolytes are materials that contain mobile charge carriers – ions. The electrolyte in lithium-ion batteries enables the transport of positive Li+ ions in between the electrodes during battery operation. The transport ... -
Synergistic Effect of Bimetallic MOF Modified Separator for Long Cycle Life Lithium-Sulfur Batteries
(Journal article; Peer reviewed, 2023)Severe polysulfide dissolution and shuttling are the main challenges that plague the long cycle life and capacity retention of lithium-sulfur (Li-S) batteries. To address these challenges, efficient separators are designed ... -
Aluminium Recycling Pre-treatments: Compaction and Thermal De-coating
(Doctoral theses at NTNU;2024:103, Doctoral thesis, 2024)Due to their light weight and versatility, aluminium alloys are found everywhere around us, from food packaging to aerospace applications. Aluminium recycling saves substantial amounts of energy, resources, and waste ... -
Corrosion Properties of Extruded Aluminium Alloys Enabling Post-Consumer Scrap Materials
(Master thesis, 2023)Dette prosjektet undersøker hvordan inkorporering av skrapmaterialer (post-consumer scrap, PSC) i aluminiumslegeringer påvirker legeringenes korrosjonsegenskaper. Inkludering av PCS i aluminiumslegeringer kan bidra til en ... -
The oxidation of boron carbide (B4C) during storage at ambient conditions
(Master thesis, 2024)Borkarbid, med sine utmerkede mekaniske egenskaper, har flere bruksområder i dag. De viktigste av disse er som energiabsorbent i skuddsikre vester og i forskjellige slipemaskiner. Borkarbid brukes som material til ... -
Tilsats av mikrokeramiske partikler i aluminiumsstøping
(Master thesis, 2023)Denne oppgaven tar for seg støpeforsøk med en aluminium (Al) 1xxx legering. Det er tilsatt ulike mengder av de mikrokeramiske partiklene titankarbid (TiC) på 4 μm og zirkoniumdiborid (ZrB2) på 3 μm for å undersøke hvordan ... -
Molecular Dynamics Simulation of the Graphite-Electrolyte Interface in Lithium-Ion Batteries
(Master thesis, 2023)Energilagring er nøkkelen for å muliggjøre effektiv utnyttelse av fornybare energikilder. Prognoser viser at den globale etterspørselen etter litium-ion-batterier forventes en årlig vekst på rundt 33 % innen 2030. Selv ... -
LCA of recycling aluminium incineration bottom ash, dross and shavings in a rotary furnace and environmental benefits of salt-slag valorisation
(Peer reviewed; Journal article, 2024)Recycling aluminium in a rotary furnace with salt-fluxes allows recovering valuable alloys from hard-to-recycle waste/side-streams such as packaging, dross and incinerator bottom ash. However, this recycling route generates ... -
Use of H2 in Mn-Ferroalloy Production
(Chapter, 2023)The use of H2 as a reductant in the iron and steel industry is an obvious choice towards carbon neutrality. For pyrometallurgical processes like Mn and Si, H2 cannot be the only solution, as the stability of the oxides of ... -
The effect of cation size on structure and properties of Ba-based tetragonal tungsten bronzes Ba4M2Nb10O30 (M = Na, K or Rb) and Ba4M2Nb8Ti2O30 (M = Ca or Sr)†
(Peer reviewed; Journal article, 2024)The second largest family of oxide ferroelectrics, after perovskites, are the tetragonal tungsten bronzes (TTB) with the general formula A24A12C4B12B28O30. Cation disorder in TTBs is known to occur if the size difference ... -
High-Temperature Reactive Wetting of Natural Quartz by Liquid Magnesium
(Journal article; Peer reviewed, 2024)High-temperature wetting of natural, high-purity quartz (SiO2) and liquid magnesium (Mg) was investigated at temperatures between 973 and 1273 K. Sessile drop experiments using the capillary purification (CP) procedure ... -
Improved Synthetic Methodology, Substrate Scope and X-ray Crystal Structure for N, N’-disubstituted Guanidines
(Peer reviewed; Journal article, 2024)Guanidine is a privileged scaffold in drug discovery. Herein we report our investigations into the acid promoted amination of pyrimidine-bearing cyanamide to produce N, N’-disubstituted guanidines. Hydrochloric acid was ... -
Design of multi-luminescent silica-based nanoparticles for the detection of liquid organic compounds
(Journal article; Peer reviewed, 2024)Tracer testing in reservoir formations is utilised to determine residual oil saturation as part of optimum hydrocarbon production. Here, we present a novel detection method of liquid organic compounds by monodisperse SiO2 ... -
Intermetallic Phase Layers in Cold Metal Transfer Aluminium-Steel Welds with an Al–Si–Mn Filler Alloy
(Peer reviewed; Journal article, 2023)